This Glarry GA-20 practice amp has been tested and powers on with no issues — gain, bass, treble, and volume all work as expected, and the MP3 input plays cleanly. The back panel picked up some scuffs and light scratches from regular practice-room use, shown clearly in the photos, but nothing structural. Comes with its original power cable. A solid pick for a bedroom or practice-space setup that doesn't need anything fancy.